EP2692544A1 - Reifenüberzug - Google Patents

Reifenüberzug Download PDF

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Publication number
EP2692544A1
EP2692544A1 EP12763671.0A EP12763671A EP2692544A1 EP 2692544 A1 EP2692544 A1 EP 2692544A1 EP 12763671 A EP12763671 A EP 12763671A EP 2692544 A1 EP2692544 A1 EP 2692544A1
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EP
European Patent Office
Prior art keywords
rubber
tire
tire casing
tread
parts
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP12763671.0A
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English (en)
French (fr)
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EP2692544A4 (de
EP2692544B1 (de
Inventor
Motoaki Kanou
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Bridgestone Corp
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Bridgestone Corp
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Publication date
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Publication of EP2692544A1 publication Critical patent/EP2692544A1/de
Publication of EP2692544A4 publication Critical patent/EP2692544A4/de
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Publication of EP2692544B1 publication Critical patent/EP2692544B1/de
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
    • B60C1/0025—Compositions of the sidewalls
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/04—Carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C13/00—Tyre sidewalls; Protecting, decorating, marking, or the like, thereof
    • B60C2013/005—Physical properties of the sidewall rubber
    • B60C2013/006—Modulus; Hardness; Loss modulus or "tangens delta"
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C13/00—Tyre sidewalls; Protecting, decorating, marking, or the like, thereof
    • B60C2013/005—Physical properties of the sidewall rubber
    • B60C2013/007—Thickness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C13/00—Tyre sidewalls; Protecting, decorating, marking, or the like, thereof
    • B60C13/04—Tyre sidewalls; Protecting, decorating, marking, or the like, thereof having annular inlays or covers, e.g. white sidewalls
    • B60C2013/045—Tyre sidewalls; Protecting, decorating, marking, or the like, thereof having annular inlays or covers, e.g. white sidewalls comprising different sidewall rubber layers

Definitions

  • the present invention relates to a tire casing which is suitably used for a two-stage vulcanization process, in particular, to a tire casing which is excellent in external damage resistance in a sidewall part.
  • Patent Document 1 proposes that a rubber composition obtained by compounding (A) 100 parts by weight of a rubber composed of a natural rubber, and/or a polyisoprene rubber and a butadiene rubber prepared by previously blending a low molecular weight butadiene rubber and a high molecular weight butadiene rubber, (B) from 30 to 60 parts by weight in total of from 10 to 40 parts by weight of silica and carbon black, (C) a sulfenamide based vulcanization accelerator, and (D) sulfur, with a compounding ratio of the vulcanization accelerator to sulfur being from 0.5 to 0.7, is used for a sidewall of a pneumatic tire.
  • A 100 parts by weight of a rubber composed of a natural rubber, and/or a polyisoprene rubber and a butadiene rubber prepared by previously blending a low molecular weight butadiene rubber and a high molecular weight butadiene rubber
  • B from 30 to 60 parts by weight in total of
  • Patent Document 2 proposes a rubber composition for sidewall containing 20 parts by mass or more of silica and not more than 5 parts by mass of carbon black with a BET specific surface area of the carbon black being 140 m 2 /g or more, based on 100 parts by mass of a rubber component containing a natural rubber component composed of at least either of a natural rubber or an epoxidized natural rubber.
  • Patent Document 3 proposes a pneumatic tire having a double-layer structure in which a sidewall part is different in the rubber quality between an outer layer and an inner layer, wherein the outer layer of the foregoing sidewall part has a durometer hardness (HD) higher by 15 or more and a loss elastic modulus (E") higher by 3 times or more than the inner layer.
  • HD durometer hardness
  • E loss elastic modulus
  • this invention is excellent from the standpoints of imparting the external damage resistance to the outer layer of the sidewall part and imparting the low fuel consumption (reduction of the rolling resistance) to the inner layer, it involved such a problem that when the outer layer is made thick for the purpose of increasing the external damage resistance, the low fuel consumption is deteriorated, whereas when the inner layer is made thick for the purpose of increasing the low fuel consumption, the external damage resistance is deteriorated.
  • Patent Document 4 proposes a manufacturing method in which a molding and vulcanization step of a tire is divided into two method stages A and B which are independent upon each other; a tire part is assembled in the method stage A so as to provide the maximum one part of at least one carcass layer and tread stripe pieces as an outermost layer in a tire radius direction; subsequently, a vulcanization treatment is applied to a surface and one or large number of strength support materials within a vulcanization mold imparting a predetermined cross-sectional contour; and this tire portion is also subjected to a vulcanization treatment step in the method stage B in the same way to assemble a complete tire.
  • Patent Document 5 proposes a manufacturing method of a tire in which in a method step A, a tire casing that is a partial tire is constituted, and this tire casing is subsequently vulcanized; and in a method step B, the tire casing is added with the entirety or the remaining part of an unvulcanized tread and vulcanized to form a complete tire, and in particular, discloses a manufacturing method of a tire in which the surface of the entirety or the remaining part of the unvulcanized tread is at least subjected to a partial plasma treatment.
  • Patent Document 6 proposes a manufacturing method of a tire adopting a two-stage vulcanization process for tires of passenger cars and including a primary vulcanization step of integrating a spiral reinforcing layer and a tread with each other and then impressing a tread pattern and a secondary vulcanization step of externally fitting a primary vulcanization material obtained in this primary vulcanization step on an outer periphery of a radial carcass ply of a case side member.
  • a tire casing to be used for the two-stage vulcanization process in which not only the low fuel consumption is enhanced, but the external damage resistance of a shoulder portion of a sidewall part close to a road surface is enhanced, is demanded.
  • the present inventor has had knowledge that in manufacturing a tire, though a tire casing member can be uniformly vulcanized by means of two-stage vulcanization, and a tire having excellent crack durability and low fuel consumption can be provided, in view of a characteristic feature of a vulcanization production method of vulcanizing only a tire casing, the resulting tire has a short length of a tread extending to a sidewall and is inferior in the external damage resistance, as compared with tires fabricated by a conventional production method of simultaneously vulcanizing a tread and a tire casing.
  • the sidewall is a member which affects the low fuel consumption performance, and it is preferable that the sidewall has high low heat generation properties (low tan ⁇ ).
  • an object of the present invention is to provide a tire casing capable of not only enhancing low fuel consumption but enhancing external damage resistance of a shoulder portion of a sidewall part close to a road surface.
  • the present inventor made extensive and intensive investigations for the purpose of making both the low heat generation properties and the external damage resistance compatible with each other. As a result, the present inventor paid attention to disposition of a rubber member having properties as in the present invention. That is, it has been found that the problems of the present invention can be solved by a manufacturing method of a tire of allowing a vulcanized tire casing and a tread member to adhere to each other and achieving integral vulcanization molding, in which a specified side rubber is arranged in a sidewall part of the tire casing in a specified range, leading to accomplishment of the present invention.
  • the present invention is concerned with:
  • a tire casing capable of not only enhancing low fuel consumption but enhancing external damage resistance of a shoulder portion of a sidewall part close to a road surface can be provided.
  • the tire casing of the present invention is a tire casing comprising a sidewall part, a bead part, a carcass ply, and a belt part and having been previously vulcanized prior to sticking a tread member, wherein when a distance from an end part of the tread member joint surface to an end part of the bottom surface of the bead part along the surface of the sidewall part is defined to be 1, the tire casing has a side rubber member (A) extending in a proportion of from 0.09 to 0.30 of the distance along the surface of the sidewall part from the end part of the tread joint surface, and the side rubber member (A) contains 100 parts by mass of a rubber component comprising at least one or more selected from the group consisting of a natural rubber, a synthetic isoprene rubber, a polybutadiene rubber, and a styrene-butadiene copolymer rubber, and from 40 to 100 parts by mass of carbon black having a nitrogen adsorption specific surface area (N 2 SA, as measured according
  • the tire vulcanization method of a two-stage vulcanization process by using the previously vulcanized tire casing of the present invention, sticking a tread member thereto and further achieving vulcanization is hereinafter often referred to as "two-stage vulcanization”.
  • a conventional method of once vulcanizing a green tire is hereinafter often referred to as “one-stage vulcanization”.
  • FIG. 1 is a cross-sectional schematic view showing an example of a tire obtained using the tire casing of the present invention.
  • a belt part 9 composed of plural belt layers is arranged outside the tire radius direction of a carcass ply 8 in which stiffeners 7 and 7' extend outside the tire radius direction from a pair of bead cores 6 and 6', respectively and which is turned up at the bead core 6 from the outside of the stiffener 7, forms a horseshoe-shaped tire case shape, is turned up at the bead core 6' on the opposite side, and is seized outside the stiffener 7'.
  • the tire 1 is equipped with a sidewall part M covering an outer part of the tire 1.
  • the sidewall part M extends from both side parts of a tread part 10 to a straight line at right angles to a tire center line, and may also possibly extend to an end part of the bottom surface of the bead part.
  • the straight line penetrates at least an end part of the carcass ply.
  • the tire 1 is also equipped with a bead part N composed of the bead core 6, the stiffener 7, the turn-up part of the carcass ply 8, and a bead rubber (not shown), etc.; and further equipped with the belt part 9, the tread part 10, and an inner liner 11 that is a low air-permeable layer.
  • FIG. 2 is a partial cross-sectional schematic view showing an example of a tire casing P of the present invention
  • FIG. 3 is a partial cross-sectional schematic view showing another example of a tire casing P of the present invention.
  • a side rubber member (A) 3 which is arranged in a tire casing P of the present invention is characterized by extending in a proportion of from 0.09 to 0.30 of the distance along the surface of the sidewall part from the end part Xa of the tread joint surface.
  • the tire casing P of the present invention is equipped with the sidewall part M, the bead part N, the carcass ply 8, and the belt part 9 and is previously vulcanized prior to sticking a tread member Q.
  • the tread member Q to be stuck to the tire casing P is one forming the tread part 10 of the tire 1, and it maybe composed of an unvulcanized rubber composition, or may be a precured tread member having been preliminarily vulcanized in advance.
  • the tire casing P of the present invention has a side rubber member (B) 4 extending along the surface of the sidewall part from an innermost position in at least a tire radius direction of the side rubber member (A) 3 to a straight line at right angles to a tire center line CL.
  • the straight line penetrates at least an end part 8a of the carcass ply.
  • the side rubber member (B) 4 extends to the end part of the bottom surface of the bead part. This is because when a rubber composition with low heat generation properties is applied as the side rubber member (B) 4, the low fuel consumption of the tire casing P is increased.
  • the side rubber member (A) 3 and the side rubber member (B) 4 may be continuously arranged upon being joined at the end parts of the both members; and as shown in FIG. 3 , the side rubber member (B) 4 may extend inward the side rubber member (A) 3.
  • a loss tangent (tan ⁇ ) of the side rubber member (B) 4 is from 0.07 to 0.16. So far as the loss tangent is 0.07 or more, the external damage resistance is enhanced, and so far as it is not more than 0.16, the low fuel consumption of the tire casing P can be increased.
  • a loss tangent (tan ⁇ ) of the side rubber member (A) 3 is from 0.17 to 0.24. It is preferable that a ratio of the loss tangent (tan ⁇ ) of the side rubber member (B) 4 and the loss tangent (tan ⁇ ) of the side rubber member (A) 3 [ ⁇ loss tangent of side rubber member (B) ⁇ / ⁇ loss tangent of side rubber member (A) ⁇ ] is from 0.2 to 0.8.
  • the loss tangent (tan ⁇ ) is one measured at a frequency of 52 Hz, an initial strain of 10 %, a measuring temperature of 60°C, and a dynamic strain of 1 % by using a dynamic viscoelasticity analyzer (for example, a spectrometer, manufactured by Ueshima Seisakusho Co., Ltd.).
  • the side rubber member (A) 3 is a member to be arranged for the purpose of enhancing the external damage resistance of the shoulder portion of the sidewall part M close to the road surface and is required to contain 100 parts by mass of a rubber component comprising at least one or more selected from the group consisting of a natural rubber, a synthetic isoprene rubber, a polybutadiene rubber, and a styrene-butadiene copolymer rubber, and from 40 to 100 parts by mass of carbon black having a nitrogen adsorption specific surface area (N 2 SA, as measured according to JIS K6217-2:2001) of from 70 to 150 m 2 /g.
  • N 2 SA nitrogen adsorption specific surface area
  • N 2 SA nitrogen adsorption specific surface area
  • both the external damage resistance and the security of workability of the unvulcanized rubber composition can be made compatible with each other.
  • a thickness of the side rubber member (A) 3 is from 0.5 to 6.5 mm. What the thickness of the side rubber member (A) 3 is 0.5 mm or more is preferable for an enhancement of the external damage resistance, and what it is not more than 6.5 mm is preferable for an enhancement of the low fuel consumption.
  • examples of carbon black having a nitrogen adsorption specific surface area of from 70 to 150 m 2 /g, which is used for the side rubber member (A) 3, include HAF (nitrogen adsorption specific surface area: from 75 to 80 m 2 /g), HS-HAF (nitrogen adsorption specific surface area: from 78 to 83 m 2 /g), LS-HAF (nitrogen adsorption specific surface area: from 80 to 85 m 2 /g), N339 (nitrogen adsorption specific surface area: from 88 to 96 m 2 /g), LI-HAF (nitrogen adsorption specific surface area: from 73 to 75 m 2 /g), HS-IISAF (nitrogen adsorption specific surface area: from 96 to 101 m 2 /g), LS-ISAF (nitrogen adsorption specific surface area: from 104 to 108 m 2 /g), ISAF (nitrogen adsorption specific surface area: from 114 to 120
  • the side rubber member (A) 3 may contain, in addition to carbon black, silica, if desired. It is preferable that the side rubber member (A) 3 contains less than 10 parts by mass of silica based on 100 parts by mass of the rubber component thereof.
  • silica Any commercially available materials can be used as silica. Above all, it is preferable to use wet type silica, dry type silica, or colloidal silica, and it is especially preferable to use wet type silica. It is preferable that a BET specific surface area (as measured in conformity with ISO 5794/1) of silica is from 40 to 350 m 2 /g. Silica whose BET specific surface area falls within this range has such an advantage that both rubber reinforcing properties and dispersibility into the rubber component can be made compatible with each other.
  • silica whose BET specific surface area falls within the range of from 80 to 350 m 2 /g is more preferable, and silica whose BET specific surface area falls within the range of from 120 to 350 m 2 /g is especially preferable.
  • At least one or more diene based rubbers selected from the group consisting of a natural rubber, a synthetic isoprene rubber, a polybutadiene rubber, and a styrene-butadiene copolymer rubber are used as the rubber component which is used for the side rubber member (A) 3.
  • At least one or more diene based rubbers selected from a natural rubber, a synthetic isoprene rubber, and a polybutadiene rubber are preferable.
  • the side rubber member (B) 4 is a member to be arranged for the purpose of enhancing the low fuel consumption of the tire casing P and preferably contains 100 parts by mass of a rubber component comprising at least one or more selected from the group consisting of a natural rubber, a synthetic isoprene rubber, and a polybutadiene rubber and from 20 to 80 parts by mass of carbon black having a nitrogen adsorption specific surface area (N 2 SA, as measured according to JIS K6217-2:2001) of from 25 to 60 m 2 /g.
  • N 2 SA nitrogen adsorption specific surface area
  • N 2 SA nitrogen adsorption specific surface area
  • the compounding amount of carbon black is preferably in the range of from 20 to 80 parts by mass, more preferably in the range of from 20 to 60 parts by mass, and still more preferably in the range of from 30 to 60 parts by mass.
  • examples of carbon black having a nitrogen adsorption specific surface area of from 25 to 60 m 2 /g, which is used for the side rubber member (B) 4 include FEF (nitrogen adsorption specific surface area: from 39 to 46 m 2 /g), MAF (nitrogen adsorption specific surface area: from 46 to 50 m 2 /g), HS-MAF (nitrogen adsorption specific surface area: from 54 to 58 m 2 /g), GPF (nitrogen adsorption specific surface area: from 26 to 28 m 2 /g), SRF (nitrogen adsorption specific surface area: from 25 to 28 m 2 /g), and so on.
  • FEF nitrogen adsorption specific surface area: from 39 to 46 m 2 /g
  • MAF nitrogen adsorption specific surface area: from 46 to 50 m 2 /g
  • HS-MAF nitrogen adsorption specific surface area: from 54 to 58 m 2 /g
  • GPF nitrogen adsorption specific surface area:
  • the side rubber member (B) 4 may contain, in addition to carbon black, silica, if desired. It is preferable that the side rubber member (B) 4 contains less than 10 parts by mass of silica based on 100 parts by mass of the rubber component thereof.
  • At least one or more diene based rubbers selected from a natural rubber, a synthetic isoprene rubber, and a polybutadiene rubber are preferable as the rubber component which is used for the side rubber member (B) 4.
  • a vulcanizing agent such as sulfur, etc.
  • a vulcanization activator such as zinc flower, an organic acid (e.g., stearic acid, etc.), etc.
  • a vulcanization accelerator such as zinc flower, an organic acid (e.g., stearic acid, etc.), etc.
  • a vulcanization accelerator such as zinc flower, an organic acid (e.g., stearic acid, etc.), etc.
  • an inorganic filler other than silica an anti-aging agent
  • an antiozonant a softener; and the like
  • a Banbury mixer As a kneader which is used for the manufacture of the side rubber member (A) 3 and the side rubber member (B) 4 according to the present invention, a Banbury mixer, a roll, an intensive mixer, and the like are useful.
  • an unvulcanized case part is molded.
  • the case part is molded in the same way as that in a molding step of a green tire in a known tire manufacturing method and is equipped with the sidewall part M, the bead part N, the carcass ply, and the belt part.
  • a carcass ply having been rubber coated with an unvulcanized rubber is wound around a building drum; a bead core is set in both end parts of the carcass ply; the both end parts of the carcass ply are then turned up; and an unvulcanized rubber of the sidewall part M is further stuck thereonto.
  • a central part in a width direction thereof is expanded in diameter into an annular form of a cross-sectional horseshoe shape; an unvulcanized belt layer is then provided on an outer periphery of the carcass layer; and a thin layer of a rubber composition preferably the same as that of the inner layer of the tread part 10 is stuck thereonto, whereby the case part can be obtained.
  • the tire casing P having a part of the tread part 10 or not having the tread part 11 at all can be obtained.
  • the tread member Q in an annular shape may be, for example, obtained by extruding a tread raw material composed of an unvulcanized rubber, whose cross section in a width direction is substantially trapezoidal, from an extruder (not shown), and cutting into a prescribed length, and then setting the cut stripe-shaped tread raw material in, for example, a vulcanization mold tool equipped with an upper mold and a lower mold to achieve vulcanization. At that time, plural grooves extending in a longitudinal direction of the annular outer surface of the tread member Q are formed.
  • the tire casing surface which has come into contact with the mold surface during the vulcanization has such properties that it is hardly co-crosslinked with the unvulcanized rubber
  • in order to remove (shave off) a surface layer rubber on each of a tread member joint surface X of the tire casing P working as an adhesive surface between the tire casing P and the tread member Q and a tire casing joint surface Y of the tread member for the purpose of securing the adhesiveness it is preferable that the joint surface X and the joint surface Y are previously abraded by a buffing machine.
  • the tire casing P and the tread member Q are allowed to adhere to each other and subjected to integral vulcanization molding to obtain the tire 1.
  • the unvulcanized adhesive rubber layer may be a usual adhesive rubber in a sheet form, or may be formed by coating a liquid rubber on the adhesive surface.
  • the tire casing P having the tread member Q stuck thereonto is sent in a non-illustrated vulcanization apparatus (for example, a vulcanizing pan), and the unvulcanized adhesive rubber layer is vulcanized to form the tire 1.
  • a non-illustrated vulcanization apparatus for example, a vulcanizing pan
  • the tread member Q is subjected to covulcanization and adhesion to the outer periphery of a crown part of the tire casing P.
  • a rubber specimen having been vulcanized at 145°C for 30 minutes was used and measured at a frequency of 52 Hz, an initial strain of 10 %, a measuring temperature of 60°C, and a dynamic strain of 1 % by using a dynamic viscoelasticity analyzer (a spectrometer, manufactured by Ueshima Seisakusho Co., Ltd.).
  • Example 1 to 4 and Comparative Examples 1 to 2 shown in Table 3 were prepared while making the tire size common as 11R22.5.
  • Each of these case parts was vulcanized by a method of surrounding the case part from the outside by a vulcanizing mold tool and pressurizing and heating it from the inside by a vulcanizing bladder (pressurizing with a high-pressure water vapor at 150°C), thereby manufacturing six kinds of tire casings.
  • a first heating means of a vulcanizing mold tool block corresponding to a bead part side of the case part was kept at 170°C
  • a second heating means of a vulcanizing mold tool block corresponding to a belt part side of the case part was kept at 140°C.
  • Vulcanization times were all 30 minutes.
  • a tread member obtained by vulcanization molding upon heating at 160°C so as to previously form a tread pattern was separately prepared.
  • Natural rubber 100 parts by mass, carbon black HAF (a trade name: Asahi #70, manufactured by Asahi Carbon Co., Ltd.) : 35 parts by mass, spindle oil: 10 parts by mass, anti-aging agent 6PPD (a trade name: Nocrac 6C, manufactured by Ouchi Chemical Industrial Co., Ltd.): 2 pats by mass, zinc flower: 5 parts by mass, stearic acid: 3 parts by mass, vulcanization accelerator TBzTD (a trade name: Sanceler TBZTD, manufactured by Sanshin Chemical Industry Co., Ltd.): 0.2 parts by mass, vulcanization accelerator NS (a trade name: Sanceler NS, manufactured by Sanshin Chemical Industry Co., Ltd.): 0.8 parts by mass, vulcanization accelerator M (a trade name: Nocceler M-P, manufactured by Ouchi Chemical Industrial Co., Ltd.): 0.5 parts by mass, sulfur: 3 parts by mass
  • each of the tread members was stuck onto each of the tire casings, and vulcanization was achieved at 120°C for 2 hours by a vulcanization apparatus, thereby obtaining each tire having the tire casing and the tread member adhered to each other.
  • FEF N-550
  • Asahi #60 nitrogen adsorption specific surface area: 40 m 2 /g
  • *4 A trade name: A/O MIX, manufactured by Sankyo Yuka Kogyo K.K.
  • *5 N-(1,3-Dimethylbutyl)-N'-phenyl-p-phenylenediamine, a trade name: Nocrac 6C, manufactured by Ouchi Chemical Industrial Co., Ltd.
  • *6 N-Cyclohexyl-2-benzothiazolyl sulfenamide
  • Nocceler CZ manufactured by Ouchi Chemical Industrial Co., Ltd.
  • the tire casing of the present invention is enhanced in the low fuel consumption and is excellent in the external damage resistance of the shoulder portion of the sidewall part close to the road surface, and therefore, it is suitably used as a tire casing for various pneumatic tires, in particular, pneumatic radial tires for small-sized trucks and large-sized vehicles (e.g., for trucks and busses, construction vehicles, etc.).
EP12763671.0A 2011-03-28 2012-03-23 Reifenüberzug Active EP2692544B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011070577A JP5291747B2 (ja) 2011-03-28 2011-03-28 台タイヤ
PCT/JP2012/057641 WO2012133248A1 (ja) 2011-03-28 2012-03-23 台タイヤ

Publications (3)

Publication Number Publication Date
EP2692544A1 true EP2692544A1 (de) 2014-02-05
EP2692544A4 EP2692544A4 (de) 2014-10-01
EP2692544B1 EP2692544B1 (de) 2016-03-23

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US (1) US20130333819A1 (de)
EP (1) EP2692544B1 (de)
JP (1) JP5291747B2 (de)
CN (1) CN103429440B (de)
AR (1) AR085567A1 (de)
TW (1) TW201307104A (de)
WO (1) WO2012133248A1 (de)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
EP2636541B1 (de) 2012-03-05 2015-04-15 The Goodyear Tire & Rubber Company Luftreifen

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Publication number Priority date Publication date Assignee Title
JP6248621B2 (ja) * 2013-12-25 2017-12-20 横浜ゴム株式会社 ゴム組成物およびこれを用いる空気入りタイヤ
JP6665561B2 (ja) * 2016-02-02 2020-03-13 住友ゴム工業株式会社 空気入りタイヤ
DE112019003766T5 (de) * 2018-09-20 2021-04-08 The Yokohama Rubber Co., Ltd. Luftreifen

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EP2636541B1 (de) 2012-03-05 2015-04-15 The Goodyear Tire & Rubber Company Luftreifen
EP2636541B2 (de) † 2012-03-05 2018-09-26 The Goodyear Tire & Rubber Company Luftreifen

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JP5291747B2 (ja) 2013-09-18
AR085567A1 (es) 2013-10-09
JP2012201336A (ja) 2012-10-22
WO2012133248A1 (ja) 2012-10-04
CN103429440B (zh) 2014-11-26
EP2692544A4 (de) 2014-10-01
EP2692544B1 (de) 2016-03-23
TW201307104A (zh) 2013-02-16
US20130333819A1 (en) 2013-12-19
CN103429440A (zh) 2013-12-04

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